Function Health vs Walk-In Lab
Walk-In Lab is cheaper to start ($305 vs $365 per year, lowest published plans). Function Health scores higher overall (9.0 vs 7.3).
By Julian Caraulani · prices checked
Quick verdict
Our pick between the two: Function Health
Function Health scores 9.0/10 against 7.3 for Walk-In Lab, ahead on price, price transparency, clinical care and access. Walk-In Lab can still be the better fit: it is best for people who want a choice of Labcorp or Quest for the same order.
Side by side
| Function Health | Walk-In Lab | |
|---|---|---|
| Lowest price | $365/yr (yearly membership, auto-renews) | $305/yr (one-off panel) |
| Our score | 9.0/10 | 7.3/10 |
| Treatments | Longevity memberships | Lab test orders |
| Medication in price | Not stated | Not stated |
| Drugs dispensed | Not stated | Not stated |
| Labs | Not stated | Not stated |
| Membership | Not stated | Not stated |
| Insurance | No; self-pay | No; self-pay |
| States | 48 states (not RI, HI), per its own site (2026-10-31) | 44 states (not NY, NJ, RI, MD, MA, AZ), per its own site (2026-10-31) |
| Cancellation | Cancel and rejoin anytime; no pauses; no refunds for prior payments; auto-renews annually at then-current price. | Refund before specimen only: partial refund within 7 days; 8 to 180 days less $10; after 181 days site credit. |
| FDA warning letters | None found (October 31, 2026) | None found (October 31, 2026) |
| Trustpilot | 4.5/5 (3,102 reviews) | 4.8/5 (6,058 reviews) |
| Best for | People who want the widest yearly panel, retested twice, in one membership. | People who want a choice of Labcorp or Quest for the same order. |
| Prices checked | 2026-10-31 | 2026-10-31 |
Function Health: a closer look
Yearly membership: 100+ markers at Quest, a mid-year retest and a clinician summary. We searched the FDA warning-letter database on October 31, 2026 and found no letter naming Function Health.
In its favour
- Measures ApoB, Lp(a), fasting insulin, omega-3 and heavy metals in the base price
- Two draws a year included
- Clinicians review every result
To weigh
- No refunds for prior payments, and membership auto-renews at the then-current price.
- '160+ lab tests' counts the mid-year retest; the annual draw is 100+.
- NY/NJ residents can be billed lab fees on top of the membership, amount not disclosed upfront.
- Not available in Rhode Island, Hawaii or Puerto Rico.
Walk-In Lab: a closer look
Lab-test store with a choice of Labcorp or Quest and a $6 physician fee per order. We searched the FDA warning-letter database on October 31, 2026 and found no letter naming Walk-In Lab.
In its favour
- Choose Labcorp or Quest
- 4.8 on Trustpilot from 6,000+ reviews
- Says it does not sell customer information
To weigh
- $6 physician fee added per order.
- No physician results review or follow-up; you are told to see your own provider.
- Labcorp route blocked in MD and MA too, beyond the usual NY/NJ/RI.
Which should you choose?
Choose Function Health
Best for people who want the widest yearly panel, retested twice, in one membership. Its lowest all-in plan is $365/yr (yearly membership, auto-renews).
Check Function Health's priceChoose Walk-In Lab
Best for people who want a choice of Labcorp or Quest for the same order. Its lowest all-in plan is $305/yr (one-off panel).
Check Walk-In Lab's priceFunction Health vs Walk-In Lab: questions people ask
Is Function Health or Walk-In Lab cheaper?
Walk-In Lab starts lower at $305 per year versus $365 at Function Health, comparing each program's lowest all-in plan.
Which is better, Function Health or Walk-In Lab?
On our published score Function Health rates 9.0 and Walk-In Lab rates 7.3. Function Health is best for people who want the widest yearly panel, retested twice, in one membership; Walk-In Lab is best for people who want a choice of Labcorp or Quest for the same order.
Do Function Health and Walk-In Lab offer the same treatments?
Function Health: Longevity memberships. Walk-In Lab: Lab test orders.
Does either include the medication in the price?
Function Health: not stated. Walk-In Lab: not stated.
Blood Test Watchdog compares testing services. It is not medical advice, does not interpret results and does not publish reference ranges as advice. Talk to a licensed clinician about which tests you need and what your results mean. Partner links may earn us a commission; our score never depends on it. Compare other programs.